Long story short:

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Reunited with my Dior #10 net filter  

Years ago I found the exact Christian Dior #10 black stocking I wanted for rear lens filtration. As pieces were used, Craig Boydston asked Schneider Optics to turn parts into filters (front, rear, MPTV, for still, different densities...). 

They not only did it, but in the process we gained a dear friend. Mr. Ron Engvaldsen, director of manufacturing for MPTV, continue to surprise us with new filters, that hopefully can be shared here in future tests.